Head-mounted display and glasses
A head-mounted display includes: an optical member that provides an image; an intermediate member extended with a curvature in a predetermined direction; and a dimming member arranged via a predetermined gap with respect to the optical member and mounted on the intermediate member in such a manner as to have a curvature in the predetermined direction.
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This application is a U.S. National Phase of International Patent Application No. PCT/JP2020/006239 filed on Feb. 18, 2020, which claims priority benefit of Japanese Patent Application No. JP 2019-037003 filed in the Japan Patent Office on Feb. 28, 2019. Each of the above-referenced applications is hereby incorporated herein by reference in its entirety.
FIELDThe present disclosure relates to a head-mounted display and glasses.
BACKGROUNDRecently, a technology that is called augmented reality (AR) and that presents, to a user, additional information such as an image or character in a superimposed manner on scenery in front of the user attracts attention. A head-mounted display (HMD) that is used by being mounted on a head is known as a device to realize the augmented reality.
In Patent Literature 1, a visual recognition system including an external light transmitting-type head-mounted display that includes a display unit to display information including a character and/or an image and a dimming filter arranged on an outer side of the display unit, and that transmits light from the outside while controlling transmittance of the dimming filter, a discrimination unit that discriminates an object, and a control device that controls the transmittance according to the discrimination by the discrimination unit is disclosed.
CITATION LIST Patent Literature
-
- Patent Literature 1: JP 2017-103767 A
However, the above-described background art may cause a deterioration in performance. Specifically, a dimming member having high rigidity may be used as a dimming member, transmittance of which can be controlled, in a head-mounted display. In a case where a dimming member having high rigidity is provided with a curvature, the dimming member may be deformed from a shape at the time of shipment due to force of returning to an original shape and cause the deterioration in performance.
Note that the above problem may be also generated in what is other than the head-mounted display. For example, in a case where a dimming member having high rigidity is used for glasses, the dimming member may be deformed from a shape at the time of shipment due to force of returning to an original shape and cause the deterioration in performance.
Thus, a head-mounted display and glasses that can control a performance deterioration are proposed in the present disclosure.
Solution to ProblemAccording to the present disclosure, a head-mounted display includes an optical member that provides an image; an intermediate member extended with a curvature in a predetermined direction; and a dimming member arranged via a predetermined gap with respect to the optical member and mounted on the intermediate member in the predetermined direction.
Hereinafter, embodiments of the present disclosure will be described in detail on the basis of the drawings. Note that in the following embodiments, overlapped description is omitted by assignment of the same reference sign to identical parts.
Note that the description will be made in the following order.
<1. Structure of head-mounted display>
<2. Intermediate member and dimming member>
<3. Wiring>
<4. First modification example>
<5. Second modification example>
<6. Third modification example>
<7. Fourth modification example>
<8. Fifth modification example>
<9. Sixth modification example>
1. Structure of Head-Mounted DisplayFirst, a configuration of a transmissive head-mounted display 100 according to the present disclosure will be described with reference to
The head-mounted display 100 according to the present embodiment is used by being mounted on a head of an observer. The head-mounted display 100 provides, in front of the observer, light of various kinds of information (image light) together with external light. The observer can visually recognize a virtual object superimposed and displayed on scenery in a real space. As illustrated in
The front block 110 is a portion mounted on the head of the observer. The front block 110 includes left and right two panel light-emitting units 111 and 112, and a substrate (not illustrated). The substrate performs processing of providing an image to the observer. For example, the substrate includes a control unit that controls an operation of the head-mounted display 100, a memory that stores data, a communication unit with respect to an external device, and the like. The control unit of the substrate includes a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), and the like. A mounting portion (such as band) to be mounted on the head of the observer may be connected to the front block 110.
The left and right two panel light-emitting units 111 and 112 emit images to present various kinds of images or information to the observer. Specifically, the left and right two panel light-emitting units 111 and 112 respectively emit virtual images for a left eye and a right eye. Here, the presented various kinds of images or information may be information displayed on the basis of data transmitted from a content distribution server or the like, or information stored in a memory mounted on the head-mounted display 100. Also, the presented various kinds of images or information may be information that is data stored in a mobile terminal of a user or data stored in a personal computer (PC), and that is acquired by the head-mounted display 100. Note that the user of the mobile terminal may be the same as the observer or different from the observer.
Also, in the example of
The optical member 120 reflects image light emitted from the panel light-emitting units 111 and 112. As a result, the optical member 120 provides the observer with various kinds of images or information. The optical member 120 is made of a material that can reflect light, such as glass and is fixed to the front block 110 by screwing, bonding, or the like. In the example of
The intermediate member 130 is a member to mount the dimming member 140 (described later). The intermediate member 130 is extended with a curvature in a predetermined direction. Note that having a curvature means that the curvature is not 0. The intermediate member 130 has extended portions 131 and 132 extended in a direction of becoming away from the front block 110. The extended portions 131 and 132 are frame members provided apart from each other. Also, with one ends being fixed to the mounting surface 113 of the front block 110, the extended portions 131 and 132 are extended in a direction of becoming away from the mounting surface 113 and in a direction of gradually becoming closer to the optical member 120. Also, the extended portions 131 and 132 are curved in a convex manner in a direction of becoming away from the optical member 120. In other words, each of the extended portions 131 and 132 is curved in an arc shape in such a manner that a center of a curvature is placed on a side of the optical member 120 compared to the intermediate member 130. That is, the predetermined direction is curved in a convex manner in the direction of becoming away from the optical member 120.
Note that in the example of
The dimming member 140 is configured by sandwiching of an electrochromic element between transparent electrodes, for example. An oxidation reaction or reduction reaction of the electrochromic element occurs according to voltage applied to the transparent electrodes, and transmittance is controlled. When the head-mounted display 100 is used in the bright outside or the like, there is a case where display brightness is insufficient with respect to external light. In such a case, the dimming member 140 is controlled to control the transmittance, whereby visibility of the head-mounted display 100 can be secured. For example, the dimming member 140 is made of a material that is an acrylic transparent resin to which an antireflection coating or the like is applied, polycarbonate, acrylic, nylon, or the like. A shape of the dimming member 140 before mounting on the intermediate member 130 which shape is illustrated in
Incidentally, in order not to deteriorate the display performance of the head-mounted display 100, the dimming member 140 is often arranged on an outer side of the optical member 120. In other words, the outer side is an opposite side of a side to provide an image of the optical member 120, and is a front side of the observer. In other words, it can be said that the dimming member 140 is arranged at a position of sandwiching the optical member 120 with the observer. Also, the outermost component of the head-mounted display 100 may have a curvature. This is to disperse external force when impact is applied to the head-mounted display 100 due to dropping or the like. Thus, there is a case where it is desired to give a curvature to the dimming member 140 that may be arranged on the outer side.
As illustrated in
The dimming member 140 may be attached with an adhesive, double-sided tape, or the like. Also, the dimming member 140 may be attached in such a manner as to be sandwiched by the intermediate member 130 by being fitted to a groove provided in the intermediate member 130. Specifically, a groove in a predetermined direction may be formed in facing surfaces of the extended portions 131 and 132 that are the intermediate member 130. In this case, the dimming member 140 may be attached to the intermediate member 130 by being slid into the groove.
In
However, the dimming member 140 may be arranged on the center side of the curvature with respect to the intermediate member 130. In other words, the dimming member 140 may be arranged on an inner side of the intermediate member 130. The inner side is a side of the optical member 120, and is an observer side. Also, the dimming member 140 may be attached to an inner surface side of the intermediate member 130. The dimming member 140 tries to be displaced outward by force with which the dimming member 140 tries to return from the curved state. Specifically, an end portion on a side connected to the front block 110 and an end portion on an opposite side in the dimming member 140 try to be displaced in a direction of becoming away from each other and try to return to a flat state. When the dimming member 140 is arranged on the inner side of the intermediate member 130, the intermediate member 130 can absorb the force that tries to displace the both end portions of the dimming member 140 in the direction of becoming away from each other. As a result, the intermediate member 130 can hold the dimming member 140 while keeping the curved state thereof, and can prevent the dimming member 140 from becoming away from the intermediate member 130.
As illustrated in
In the example of
Also, in the example of
Next, an example of an effect acquired when the dimming member 140 is arranged via a predetermined gap with respect to the optical member 120 and mounted on the intermediate member 130 will be described with reference to
Generally, it is difficult to manufacture a dimming member having a certain degree of rigidity and in a curved state. As illustrated in
Next, an example of another effect by an arrangement of the dimming member 140 via a predetermined gap with respect to the optical member 120 will be described with reference to
As illustrated in
Also, for example, in a case where the dimming member 940 attached to an intermediate member 930 is attached to the optical member 920 as in the head-mounted display 900 according to the comparative example illustrated in
Note that the head-mounted display 100 may have a member that absorbs external force applied to the dimming member 140. This point will be described with reference to
Note that the spacer 150 may be arranged on the other end side of the extended portions 131 and 132 one ends of which are connected to the front block 110. When external force due to drop impact or the like is applied to the head-mounted display 100, there is a possibility that the other end side of the extended portions 131 and 132 which side is not fixed to the front block 110 is displaced more than the one end side thereof and collides (interferes) with the optical member 120. When the spacer 150 is arranged on the other end side, it is possible to reduce the interference.
2. Intermediate Member and Dimming MemberNext, sizes, shapes, and strength suitable for the intermediate member 130 and the dimming member 140 will be described with reference to
It is desirable that the head-mounted display 100 is configured in such a manner that a load is not applied to the optical member 120 in a case of being placed on a floor, a desk, or the like. In a case where a user places the head-mounted display 100 on the floor or desk, the head-mounted display 100 can take various postures. In a case of being placed on the floor or desk, weight of the head-mounted display 100 itself (weight of the head-mounted display 100) is applied in a direction of arrows illustrated in
It is preferable that a size of a dimming unit 160 that is the intermediate member 130 and the dimming member 140 of the head-mounted display 100 is configured to be larger than a size of the optical member 120. In other words, as illustrated in
In
In
In
In such a manner, it is desirable to design the sizes, shapes, and strength of the intermediate member 130 and the dimming member 140 in consideration of the shape or placed postures of the head-mounted display 100.
As illustrated in
Next, a wiring position of the dimming member 140 will be described with reference to
As illustrated in
The terminal portion 143 is arranged at an end portion, which has a flat shape in planar view, in the dimming member 140. Here, a line-of-sight direction in the planar view is a vertical direction of an end surface of the dimming member 140. For example, when the dimming member 140 is seen in directions F2 and F3, a shape thereof in the planar view is flat in
The first modification example will be described with reference to
The light guide plate 121 includes a transparent member. For example, the light guide plate 121 is a hologram light guide plate, a dielectric multilayer film light guide plate, or the like. In the head-mounted display 100 according to the first modification example, light incident from the light sources 122 and 123 is reflected and propagated by the light guide plate, and is guided to eyes of an observer. The light guide plate 121 and the light sources 122 and 123 are fixed to a mounting surface 113 of a front block 110.
5. Second Modification ExampleThe second modification example will be described with reference to
Note that in the second modification example, an optical member 120 may include a light guide plate 121 and light sources 122 and 123 similarly to the first modification example.
6. Third Modification ExampleThe third modification example will be described with reference to
In the head-mounted display 200 according to the third modification example, two dimming members 240 (240A and 240B) are arranged. An intermediate member 230 has an extended portion 231, and reinforcement portions 232, 233, and 234. The reinforcement portions 232, 233, and 234 are extended in a direction of becoming away from a front block 210. Specifically, one ends of the reinforcement portions 232, 233, and 234 are mounted on a mounting surface 213 of the front block 210, and the reinforcement portions 232, 233, and 234 are extended in a direction of becoming away from the mounting surface 213. The extended portion 231 connects the other ends of the reinforcement portions 232, 232, and 234, and is arranged along an outer periphery of the dimming members. Furthermore, the extended portion 231 is extended with a curvature in a predetermined direction. Here, the predetermined direction is a direction that intersects with the direction of becoming away from the front block 210. Specifically, the predetermined direction is a direction that intersects with a longitudinal direction of the head-mounted display 200. In other words, the predetermined direction is a direction along the mounting surface 213 of the front block 210. The extended portion 231 may include a portion having no curvature. For example, as illustrated in
Each of the dimming members 240A and 240B is mounted on the intermediate member 230 in such a manner as to have a curvature in the predetermined direction. The dimming members 240A and 240B are arranged via a predetermined gap with respect to an optical member 220. Note that in the third modification example, the dimming members 240A and 240B do not have a curvature in the direction becoming away from the front block 210.
Not all of the reinforcement portions 232, 233, and 234 extended in the direction of becoming away from the front block 210 need to be arranged. For example, either the reinforcement portion 233 extended from a center of the front block 210 or the reinforcement portions 232 and 234 respectively extended from both end sides of the front block 210 may not be arranged.
In the third modification example, terminal portions 243A and 243B of the dimming members 240A and 240B are arranged at end portions having a flat shape in planar view. For example, since shapes in the planar view are flat when seen in directions F4 and F5 in
Note that in the third modification example, the optical member 220 is a member that reflects image light emitted from panel light-emitting units 211 and 212. However, the optical member 220 may include a light guide plate 221 and light sources 222 and 223 as in the first modification example.
7. Fourth Modification ExampleThe fourth modification example will be described with reference to
In the head-mounted display 300 according to the fourth modification example, three dimming members 340A, 340B, and 340C are arranged. An intermediate member 330 includes reinforcement portions 331, 332, 335, 336, and 338 and extended portions 333, 334, 337, and 339. The intermediate member 330 is extended with a curvature in a predetermined direction. The extended portions 333 and 334 are extended with a curvature in a direction of becoming away from a mounting surface 313. Also, the extended portion 337 is extended from the extended portion 333 with a curvature in a direction of becoming closer to an optical member 320. The extended portion 339 is extended from the extended portion 334 with a curvature in the direction of becoming closer to the optical member 320. Note that the reinforcement portion 332 and the extended portion 333 may be integrally molded as illustrated in
Each of the dimming members 340A, 340B, and 340C is mounted on the intermediate member 330 in such a manner as to have a curvature in a predetermined direction. The dimming member 340B is mounted on the intermediate member 330 in such a manner as to have a curvature in a direction of becoming away from a front block 310. Here, having a curvature means that a cross section in a direction intersecting with a direction connecting the extended portions 333 and 334 has an arc shape. In other words, having a curvature means that the cross section in the direction intersecting with the direction connecting the extended portions 333 and 334 is curved.
Each of the dimming member 340A and the dimming member 340C is mounted on the intermediate member 330 in such a manner as to have a curvature in a predetermined direction. Here, having a curvature means that a cross section in a direction intersecting with the direction of becoming away from the mounting surface 313 has an arc shape. In other words, having a curvature means that the cross section in the direction intersecting with the direction of becoming away from the mounting surface 313 is curved. Also, each of the dimming member 340A and the dimming member 340C is curved in a convex shape in a direction of becoming away from the optical member 320. The dimming members 340A, 340B, and 340C are arranged via a predetermined gap with respect to the optical member 320.
In the fourth modification example, strength of the head-mounted display 300 can be increased since the reinforcement portions 331, 332, 335, 336, and 338 extended in directions in which the dimming members do not have curvatures are arranged. On the one hand, in the fourth modification example, not all of the reinforcement portions 331, 332, 335, 336, and 338 extended in the directions in which the dimming members do not have the curvatures need to be arranged. For example, the reinforcement portions 331, 336, and 338 may not be arranged. One or both of the reinforcement portion 332 and the reinforcement portion 335 may be deleted. This makes it possible to reduce the number of parts and thus a cost.
In the fourth modification example, terminal portions 343A, 343B, and 343C of the dimming members 340A, 340B, and 340C are arranged at end portions having a flat shape in planar view. For example, since shapes in the planar view are flat when seen in F6 to F11 directions in
Note that in the fourth modification example, the optical member 320 is a member that reflects image light emitted from panel light-emitting units 311 and 312. However, the optical member 320 may include a light guide plate 321 and light sources 322 and 323 as in the first modification example.
8. Fifth Modification ExampleThe fifth modification example will be described with reference to
As illustrated in
Next, another configuration example of glasses will be described.
As illustrated in
In the fifth modification example, an example in which the lenses 420A, 420B, 520A, and 520B of the glasses 400 and 500, and the dimming members 440A, 440B, 540A and 540B are mounted on the same frames 430 and 530 has been described. In other words, the optical members (lenses) are mounted on the intermediate member (frame) in the fifth modification example. By giving a predetermined thickness to the frames 430 and 530, it becomes possible to mount the dimming members 440A, 440B, 540A, and 540B having a curvature in a predetermined direction to the frames 430 and 530. It is possible to select the predetermined direction according to a convex amount of the lenses, a degree of inclination of the glasses, and a design. Although glasses are described as an example in the fifth modification example, a configuration in which an intermediate member holds both of an optical member and a dimming element can be also applied to the head-mounted displays 100, 200, and 300.
Also, the glasses 400 and 500 according to the fifth modification example may have optical members such as the panel light-emitting unit and the like described above. In this case, the glasses 400 and 500 respectively have optical members on the frames 430 and 530. Note that the glasses 400 and 500 can be also applied to each of a system of providing an image to an observer by reflecting image light emitted by a panel light-emitting unit as in the example illustrated in
The sixth modification example will be described with reference to
The sixth modification example is the same as the fifth modification example in a point that a dimming member 640 is mounted on ordinary glasses. In the sixth modification example, the dimming member 640 is mounted on the intermediate member 630 different from the frame 670 on which the lenses 620A and 640B that are the optical members of the glasses 600 are mounted. Note that the lenses 620A and 620B may be convex lenses or concave lenses.
As illustrated in
In
Note that an effect described in the present description is merely an example and is not a limitation, and there may be a different effect. That is, the technology according to the present disclosure can exhibit a different effect obvious to those skilled in the art from a description of the present specification in addition to the above effect or instead of the above effect.
Note that the present technology can also have the following configurations.
(1)
A head-mounted display comprising:
-
- an optical member that provides an image;
- an intermediate member extended with a curvature in a predetermined direction; and
- a dimming member arranged via a predetermined gap with respect to the optical member and mounted on the intermediate member in the predetermined direction.
(2)
The head-mounted display according to (1), wherein the intermediate member has a plurality of extended portions extended with a curvature in the predetermined direction, and the dimming member is mounted on the plurality of extended portions.
(3)
The head-mounted display according to (1) or (2), wherein both ends of the dimming member are mounted on the plurality of extended portions of the intermediate member.
(4)
The head-mounted display according to (1), wherein the intermediate member is arranged along an outer periphery of the dimming member.
(5)
The head-mounted display according to (1), wherein the dimming member has a larger shape than the optical member.
(6)
The head-mounted display according to (1), wherein the dimming member is arranged on an opposite side of a side to provide the image of the optical member.
(7)
The head-mounted display according to (1), wherein the dimming member is arranged on a center side of the curvature with respect to the intermediate member.
(8)
The head-mounted display according to (1), wherein the intermediate member is made of a material having higher rigidity than that of the dimming member.
(9)
The head-mounted display according to (1), wherein the dimming member is an electrochromic device.
(10)
The head-mounted display according to (1) or (9), wherein the dimming member includes a wiring line.
(11)
The head-mounted display according to any one of (1), (10) to (11), wherein the dimming member has a terminal portion from which the wiring line is pulled out and which is arranged at an end portion of the dimming member which portion has a flat shape in planar view.
(12)
The head-mounted display according to claim any one of (1), (10) to (11), wherein the dimming member includes a first dimming member and a second dimming member, and a part of a first wiring line of the first dimming member and a part of a second wiring line of the second dimming member are arranged in an overlapped manner.
(13)
The head-mounted display according to (1), wherein the optical member is mounted on the intermediate member.
(14)
The head-mounted display according to (1), further comprising a spacer arranged in the predetermined gap.
(15)
Glasses comprising:
-
- an optical member that provides an image;
- an intermediate member extended with a curvature in a predetermined direction; and
- a dimming member arranged via a predetermined gap with respect to the optical member and mounted on the intermediate member in such a manner as to have a curvature in the predetermined direction.
(16)
The glasses according to (15), wherein the intermediate member and the dimming member are configured detachably.
REFERENCE SIGNS LIST
-
- 100 HEAD-MOUNTED DISPLAY
- 110 FRONT BLOCK
- 111, 112 PANEL LIGHT-EMITTING UNIT
- 113 MOUNTING SURFACE
- 120 OPTICAL MEMBER
- 130 INTERMEDIATE MEMBER
- 131, 132, 133 EXTENDED PORTION
- 134 REINFORCEMENT PORTION
- 140 DIMMING MEMBER
- 141 DIMMING UNIT
- 142 WIRING LINE
- 143 TERMINAL PORTION
- 150 SPACER
- 160 DIMMING UNIT
- 170 MOUNTING PORTION
Claims
1. A head-mounted display comprising:
- an optical member that provides an image;
- an intermediate member extended with a curvature in a predetermined direction; and
- a dimming member arranged via a predetermined gap with respect to the optical member and mounted on the intermediate member in the predetermined direction.
2. The head-mounted display according to claim 1, wherein the intermediate member has a plurality of extended portions extended with a curvature in the predetermined direction, and the dimming member is mounted on the plurality of extended portions.
3. The head-mounted display according to claim 2, wherein both ends of the dimming member are mounted on the plurality of extended portions of the intermediate member.
4. The head-mounted display according to claim 1, wherein the intermediate member is arranged along an outer periphery of the dimming member.
5. The head-mounted display according to claim 1, wherein the dimming member has a larger shape than the optical member.
6. The head-mounted display according to claim 1, wherein the dimming member is arranged on an opposite side of a side to provide the image of the optical member.
7. The head-mounted display according to claim 1, wherein the dimming member is arranged on a center side of the curvature with respect to the intermediate member.
8. The head-mounted display according to claim 1, wherein the intermediate member is made of a material having higher rigidity than that of the dimming member.
9. The head-mounted display according to claim 1, wherein the dimming member is an electrochromic device.
10. The head-mounted display according to claim 9, wherein the dimming member includes a wiring line.
11. The head-mounted display according to claim 10, wherein the dimming member has a terminal portion from which the wiring line is pulled out and which is arranged at an end portion of the dimming member which portion has a flat shape in planar view.
12. The head-mounted display according to claim 10, wherein the dimming member includes a first dimming member and a second dimming member, and a part of a first wiring line of the first dimming member and a part of a second wiring line of the second dimming member are arranged in an overlapped manner.
13. The head-mounted display according to claim 1, wherein the optical member is mounted on the intermediate member.
14. The head-mounted display according to claim 1, further comprising a spacer arranged in the predetermined gap.
15. Glasses comprising:
- an optical member that provides an image;
- an intermediate member extended with a curvature in a predetermined direction; and
- a dimming member arranged via a predetermined gap with respect to the optical member and mounted on the intermediate member in such a manner as to have a curvature in the predetermined direction.
16. The glasses according to claim 15, wherein the intermediate member and the dimming member are configured detachably.
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Type: Grant
Filed: Feb 18, 2020
Date of Patent: Aug 6, 2024
Patent Publication Number: 20220146830
Assignee: SONY GROUP CORPORATION (Tokyo)
Inventor: Shin Kuroda (Tokyo)
Primary Examiner: William Choi
Application Number: 17/431,806
International Classification: G02B 27/01 (20060101); G02F 1/153 (20060101); H04N 13/344 (20180101);